CVE-2022-23606
First published: Fri Feb 04 2022(Updated: )
Envoy is an open source edge and service proxy, designed for cloud-native applications. When a cluster is deleted via Cluster Discovery Service (CDS) all idle connections established to endpoints in that cluster are disconnected. A recursion was introduced in the procedure of disconnecting idle connections that can lead to stack exhaustion and abnormal process termination when a cluster has a large number of idle connections. This infinite recursion causes Envoy to crash. Users are advised to upgrade.
Credit: security-advisories@github.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Envoyproxy Envoy | >=1.20.0<1.20.2 | |
| Envoyproxy Envoy | =1.21.0 | |
| redhat/servicemesh-proxy | <0:2.0.9-3.el8 | 0:2.0.9-3.el8 |
| redhat/servicemesh-proxy | <0:2.1.2-4.el8 | 0:2.1.2-4.el8 |
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Reference Links
- https://github.com/envoyproxy/envoy/commit/4b6dd3b53cd5c6d4d4df378a2fc62c1707522b31
- https://github.com/envoyproxy/envoy/security/advisories/GHSA-9vp2-4cp7-vvxf
- https://access.redhat.com/errata/RHSA-2022:1276
- https://access.redhat.com/errata/RHSA-2022:1275
- https://access.redhat.com/security/cve/cve-2022-23606
- https://bugzilla.redhat.com/show_bug.cgi?id=2050758
- https://www.cve.org/CVERecord?id=CVE-2022-23606 https://nvd.nist.gov/vuln/detail/CVE-2022-23606 https://github.com/envoyproxy/envoy/security/advisories/GHSA-9vp2-4cp7-vvxf
Frequently Asked Questions
What is CVE-2022-23606?
CVE-2022-23606 is a vulnerability found in Envoy, an open-source edge and service proxy, which allows for a stack exhaustion leading to denial of service (DoS) when a cluster is deleted via the Cluster Discovery Service (CDS).
What is the severity of CVE-2022-23606?
The severity of CVE-2022-23606 is rated as medium with a CVSS (Common Vulnerability Scoring System) score of 6.5.
How does CVE-2022-23606 impact Envoy?
CVE-2022-23606 impacts Envoy by causing a stack exhaustion, resulting in a denial of service (DoS) condition when a cluster is deleted via the Cluster Discovery Service (CDS).
Which versions of Envoy are affected by CVE-2022-23606?
Versions up to and including 1.20.2 and version 1.21.0 of Envoy are affected by CVE-2022-23606.
How can I mitigate CVE-2022-23606?
To mitigate CVE-2022-23606, it is recommended to upgrade to Envoy version 1.20.3 or later, or version 1.21.1 or later.
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